You already know what we are going to say to that question. Yes! Test chlorine and pH daily. If you do so and keep your chlorine levels where they need to be, you won't get algae in the first place! No 'guess-strips.' Get a Taylor K2006 kit or 2006C (better buy). You need it to manage your pool properly. It isn't available locally but you can get it through this link:> http://pool9.net/tk/